Construction method for strengthening beam formwork at large-area concrete expansion joints

Abstract

The present invention relates to building construction, in particular to a construction method for reinforcing beam formwork at large-area concrete expansion joints. The method comprises the following steps: A. supporting the beam formwork, and opening circular holes in the beam side formwork according to the spacing of the reinforcement; B. tying the beam reinforcement bars; C. adding formwork support rods; D. reinforcing the formwork at the expansion joint, inserting the tension screws into the circular holes of the side formwork, installing square steel pipes on the tension screws at the expansion joints, installing U-shaped clips on the outside of the square steel pipes, adding flat steel at the side formwork joints, and installing the flat steel on the tension screws; E. pouring concrete; F. removing the formwork and transferring it to the next expansion joint for use. The present invention changes the original construction process, improves the quality of concrete molding, avoids quality problems such as misalignment, concave beam sections, and insufficient protective layers caused by unstable wooden strip reinforcement, and avoids the hidden danger of formwork explosion caused by unstable wooden strip reinforcement during concrete pouring.

Description

Technical Field

[0001] The invention relates to building construction, in particular to a construction method for reinforcing beam formwork at large-area concrete expansion joints. Background Art

[0002] Expansion joints are necessary for large-scale concrete construction. Currently, the formwork is cut into wooden strips according to the width of the expansion joint. The wooden strips are then inserted into the joints, and the beams on either side are secured using compression force. However, unstable wooden strip reinforcement can lead to quality issues such as misalignment, concave beam sections, and insufficient protective layers. This creates the risk of formwork exploding during concrete pouring. Chinese utility model publication number CN213290693U discloses a concrete construction formwork that cannot be used for large-scale concrete. Summary of the Invention

[0003] The present invention aims to solve the above technical problems, thereby providing a construction method for reinforcing beam formwork at large-area concrete expansion joints and improving the concrete molding quality.

[0004] The present invention solves the technical problem and adopts the following technical solution:

[0005] A construction method for reinforcing beam formwork at large-area concrete expansion joints comprises the following steps:

[0006] A. Beam formwork support

[0007] Open circular holes in the beam side formwork according to the reinforcement spacing;

[0008] B. Beam reinforcement binding;

[0009] C. Add formwork support sticks;

[0010] D. Formwork reinforcement at expansion joints

[0011] 1) Material preparation

[0012] Prepare tension screws, U-shaped clamps, fastening bolts, square steel pipes and flat steel;

[0013] 2) Opening

[0014] The square steel tube and flat steel are respectively provided with through holes corresponding to the circular holes of the beam side formwork;

[0015] 3) Install tension screws, square steel pipes and flat steel

[0016] Insert the tension screws into the round holes of the side formwork, install square steel pipes on the tension screws at the expansion joints, install U-shaped clips on the outside of the square steel pipes, add flat steel at the joints of the side formwork, and install the flat steel on the tension screws;

[0017] E. Concrete pouring;

[0018] F. Remove the mold and move it to the expansion joint below for use.

[0019] Compared with the prior art, the present invention adopting the above technical solution has the following beneficial effects:

[0020] 1) Change the original construction process to improve the quality of concrete molding and avoid quality problems such as misalignment, concave beam sections, and insufficient protective layer caused by unstable wooden reinforcement;

[0021] 2) Avoid the hidden danger of formwork explosion due to unstable wood reinforcement during concrete pouring;

[0022] 3) Speed up the construction progress. At the same time, the materials used in this measure can be circulated and used to reduce construction costs.

[0023] Furthermore, the optimization scheme of the present invention is:

[0024] The square steel tube and the U-shaped clamp are respectively provided with threaded holes, and the fastening bolts are installed in the threaded holes.

[0025] The square steel pipes are staggered up and down at the beams on both sides.

[0026] The flat steel is located on the inner side of the square steel tube.

[0027] The tension screw rod is a through-wire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an embodiment of the present invention;

[0029] Figure 2 A side view of an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the connection between the tension screw, square steel pipe and U-shaped clip.

[0031] In the figure: left beam formwork 1; side formwork 1-1; right beam formwork 2; supporting formwork rods 3; tension screws 4; square steel pipes 5; U-shaped clips 6; fastening bolts 7; flat steel 8. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] See also Figure 1 、 Figure 2 This embodiment provides a construction method for reinforcing beam formwork at large-area concrete expansion joints, which is carried out in the following steps:

[0035] A. Beam formwork support

[0036] Support the left beam template 1 and the right beam template 2, with an expansion joint between the left beam template 1 and the right beam template 2. According to the spacing of the beam template reinforcement at the expansion joint, circular holes are opened on the side templates 1-1 on both sides of the left beam template 1 and the right beam template 2;

[0037] B. Beam reinforcement binding

[0038] Tie the beam reinforcement inside the left beam formwork 1 and the right beam formwork 2;

[0039] C. Adding formwork sticks

[0040] Supporting formwork rods 3 are provided between the side formworks 1-1 of the left beam formwork 1 and between the side formworks 1-1 of the right beam formwork 2;

[0041] D. Formwork reinforcement at expansion joints

[0042] 1) Material preparation

[0043] Prepare the tension screw 4, square steel pipe 5, U-shaped clamp 6, fastening bolt 7 and flat steel 8. The tension screw 4 is a through-wire structure.

[0044] 2) Opening

[0045] The square steel tube 5 and the flat steel 8 are respectively provided with through holes corresponding to the circular holes of the side template 1-1;

[0046] 3) Install tension screws, square steel pipes and flat steel

[0047] Insert the tensioning screws 4 into the circular holes of the side formwork 1-1. Install the tensioning screws 4 at the expansion joint with square steel tubes 5. Install U-shaped clips 6 on the outside of the square steel tubes 5. The side panels of the U-shaped clips 6 have through holes. The square steel tubes 5 are fixed with the U-shaped clips 6. The tube walls of the square steel tubes 5 have threaded holes. The bottom panels of the U-shaped clips 6 have threaded holes. Fastening bolts 7 are installed in the threaded holes of the square steel tubes 5 and the U-shaped clips 6. This makes it convenient for construction workers to place and fix the square steel tubes 5 in the narrow expansion joint. Use power tools to tighten the outside of the left beam formwork 1 and the right beam formwork 2 to fully reinforce the beams. Due to the small spacing at the expansion joint, the square steel tubes 5 are staggered up and down on the two side beams. At the same time, flat steel 8 is added at the template joint. The flat steel 8 is located on the inside of the square steel tubes 5 to ensure the reinforcement and stability of the template joint.

[0048] E. Concrete pouring;

[0049] F. Remove the mold and move it to the expansion joint below for use.

[0050] This construction method makes the formwork reinforcement in narrow spaces more technologically advanced and standardized, while improving the quality of concrete molding, avoiding quality problems such as misalignment and concave beam surfaces after concrete molding, and accelerating the construction progress.

[0051] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A construction method for reinforcing beam formwork at large-area concrete expansion joints, comprising the following steps: A. Beam formwork support Open circular holes in the beam side formwork according to the reinforcement spacing; B. Beam reinforcement binding; C. Add formwork support sticks; D. Formwork reinforcement at expansion joints 1) Material preparation Prepare tension screws, U-shaped clamps, fastening bolts, square steel pipes and flat steel; 2) Opening The square steel tube and flat steel are respectively provided with through holes corresponding to the circular holes of the beam side formwork; 3) Install tension screws, square steel pipes and flat steel Insert the tension screws into the circular holes of the side formwork, install square steel pipes on the tension screws at the expansion joints, install U-shaped clips on the outside of the square steel pipes, and the side plates of the U-shaped clips are provided with through holes. The square steel pipes are fixed with U-shaped clips, and the pipe walls of the square steel pipes are provided with threaded holes. The bottom plates of the U-shaped clips are provided with threaded holes. The fastening bolts are installed in the threaded holes of the square steel pipes and the U-shaped clips, which makes it convenient for construction workers to place and fix the square steel pipes in the specified positions at the narrow expansion joints. Use power tools to tighten the outside of the left and right beam formworks to fully reinforce the beams. Due to the small spacing at the expansion joints, the square steel pipes are staggered up and down at the beams on both sides. At the same time, flat steel is added at the template joints. The flat steel is located on the inside of the square steel pipes to ensure the reinforcement and stability of the template joints. E. Concrete pouring; F. Remove the mold and move it to the expansion joint below for use; The square steel tube and the U-shaped clamp are respectively provided with threaded holes, and the fastening bolts are installed in the threaded holes; The square steel tubes are staggered up and down at the two side beams; The flat steel is located inside the square steel tube; The tension screw rod is a through-wire structure.

Images